Reduce memory usage while linking on arm{el,hf} platforms

Reduce memory usage while linking on arm{el,hf} platforms

The build even on armhf is failing while linking mostly due exhausted
memory usage. Reduce the memory usage on arm{el,hf} platform by telling
the linker to not hold used memory.

Author: Olivier Tilloy <olivier.tilloy@canonical.com>

Gbp-Pq: Topic porting-arm
Gbp-Pq: Name Reduce-memory-usage-while-linking-on-arm-el-hf-platforms.patch